> -----Original Message----- > From: python-dev-admin@python.org [mailto:python-dev-admin@python.org]On > Behalf Of Tim Peters > Sent: Monday, March 17, 2003 12:39 > To: David LeBlanc > Cc: Python-Dev@Python. Org > Subject: RE: [Python-Dev] RE: Windows IO > > > [David LeBlanc] > > Have we discovered the mystery of life at last? "True" is 64? :) > > NOTE: PythonDoc says "isatty" is Unix only. > > I don't know what PythonDoc means. The docs for the file-object method > isatty (which my examples used) do not say it's Unix only: > > http://www.python.org/doc/current/lib/bltin-file-objects.html > > If some other piece of doc contradicts that, please tell > > mailto:python-docs@python.org > > or open an SF bug report? > I don't have the capability to open an SF bug report. "isatty" is not documented at all under the Global Modules "sys" entry for Python 2.2.1 documentation (sorry, I thought "PythonDoc" was a recognized name). The following doesn't work: J:\>python Python 2.2.1 (#34, Jul 16 2002, 16:25:42) [MSC 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> stdout.isatty() Traceback (most recent call last): File "<stdin>", line 1, in ? NameError: name 'stdout' is not defined >>> isatty(stdout) Traceback (most recent call last): File "<stdin>", line 1, in ? NameError: name 'isatty' is not defined >>> isatty(__stdout__) Traceback (most recent call last): File "<stdin>", line 1, in ? NameError: name 'isatty' is not defined >>> import os >>> os.stdout.isatty() Traceback (most recent call last): File "<stdin>", line 1, in ? AttributeError: 'module' object has no attribute 'stdout' >>> Is isatty a built-in, a function of os only available on Unix, or a function of sys available on all platforms? It appears to be a function in the sys module and so the doc for it should go there? Under the "os" entry it's: "isatty(fd) Return 1 if the file descriptor fd is open and connected to a tty(-like) device, else 0. Availability: Unix. " I don't see how to create a file() that is connected to stdout without importing sys...? Is there a way? If there is not, than file.isatty() is moot. So, really, what is the meaning of "64" as the return from sys.stdout.isatty()? Dave LeBlanc Seattle, WA USA
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